Giant piezoelectric voltage coefficient in grain-oriented modified PbTiO 3 material

Yongke Yan, Jie E. Zhou, Deepam Maurya, Yu U. Wang, Shashank Priya

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

A rapid surge in the research on piezoelectric sensors is occurring with the arrival of the Internet of Things. Single-phase oxide piezoelectric materials with giant piezoelectric voltage coefficient (g, induced voltage under applied stress) and high Curie temperature (Tc) are crucial towards providing desired performance for sensing, especially under harsh environmental conditions. Here, we report a grain-oriented (with 95% texture) modified PbTiO3 ceramic that has a high Tc (364 °C) and an extremely large g33 (115×10-3VmN-1) in comparison with other known single-phase oxide materials. Our results reveal that selfpolarization due to grain orientation along the spontaneous polarization direction plays an important role in achieving large piezoelectric response in a domain motion-confined material. The phase field simulations confirm that the large piezoelectric voltage coefficient g33 originates from maximized piezoelectric strain coefficient d33 and minimized dielectric permittivity e33 in [001]-textured PbTiO3 ceramics where domain wall motions are absent.

Original languageEnglish (US)
Article number13089
JournalNature communications
Volume7
DOIs
StatePublished - Oct 11 2016

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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